ZW32-12 outdoor column high-voltage vacuum circuit breaker

I. Product Overview

1, the main purpose

ZW32-12 column type outdoor high voltage vacuum circuit breaker (hereinafter referred to as breaker) is rated voltage 12KV, three-phase AC 50HZ outdoor distribution equipment. Distribution network is mainly used for breaking, closing the power system load current, overload current and short circuit current. For substation and miners enterprise distribution system for protection and control purposes, more suitable for rural power grids and frequent operation place, particularly for urban and rural power grids needs.

The installation manual specifies the main technical parameters of the circuit breaker, product mix, as well as the principles and methods of operation, installation, use and maintenance of content.

2, the reference standard

GB1984-1989 "AC high voltage fuses"

GB / T11022-1999 "high-voltage switchgear and control equipment standards common technical requirements"

GB311.1-1997 "insulated high-voltage transmission and distribution equipment"

CB3309-1989 "high-voltage switchgear at room temperature mechanical test"

DL403 "within 10-35KV indoor high voltage vacuum circuit breaker ordering technology"

3, the use of environmental conditions

a, altitude not more than 2000 meters

b, ambient air temperature: -45 ℃ ~ + 40 ℃

c, wind speed is not greater than 35m / s

d, filthy grade: Ⅳ grade

e, Installation place: no combustibles, explosion, chemical corrosion of the place

f, seismic intensity is not more than 8

4, the main features

1) three-phase circuit breaker pillar structure, stable and reliable breaking performance, no fire and explosion hazards, maintenance-free, small size, light weight and long service life.

2) the circuit breaker fully enclosed structure, good sealing performance, help to improve the moisture-proof, anti-condensation properties, adapted for use in hot and humid regions.

3) Three-phase current transformer pillar and imported outdoor epoxy resin solid insulation, high temperature resistant, UV resistant, anti-aging characteristics.

4) The operating mechanism of a small spring operating mechanism, sub-closing low energy consumption; mechanism drive with direct drive transmission mode, open and close small parts, high reliability. Institutions operating mechanism placed in a sealed box, to solve the problem of corrosion mechanism, improve the reliability of the mechanism.

Sub-closing operation 5) of the circuit breaker can be manual or electric operation and remote operation. With controller supporting the realization of distribution automation, but also coincides with the composition recloser controller.

6) the circuit breaker may be provided two or three phase CT, for overcurrent protection and automatic tripping intelligent controller information analysis.

7) breaker weight 100KG around.

Second, the product works and agencies

1, the structure

Circuit breakers by the vacuum interrupter, operating mechanism and the supporting parts and other components, with a fully enclosed three-phase structure of the strut.

2, the operating mechanism and working principle

1) the circuit breaker operating mechanism can be manual, electric operation or permanent magnetic actuator.

2) Works

Breaker operated by the operating mechanism, driven by the output crank arm and three-phase transmission lever, closing the switch. After circuit-breaker closing, opening manually pulling the pull ring or coil a voltage is applied to the sub-gate, the drive rod driven by the opening of the spring, so that the circuit breaker.

Switch operation, when the line current exceeds a set value, overcurrent coil movements to opening axle rotation, so that the circuit breaker, so as to protect lines and equipment role.